To prepare filling, place 1/2 cup sugar and the next 4 ingredients (1/2 cup sugar through cream cheese) in a food processor; process until smooth, scraping sides of processor bowl occasionally. Spoon 1 tablespoon filling into each prepared muffin cup. Bake at 350° for 23 minutes or until edges are brown and filling is set. Remove cups from pans immediately; cool on a wire rack.